The most hottest and humid air mass of the summer so far occupied New Jersey from the 25th through the 27th. This air mass had as its origin the desert southwest in the United States and a ridge of high pressure aloft brought this air mass east with it through the rest of the country. The hottest and most humid day was the 27th. This was the hottest day of the year so far for most places and the highest temperatures seen in many areas since August of 2002. The combination of high temperatures and humidity levels pushed afternoon heat indices to between 105 and 110 degrees in central and southern New Jersey on the 27th. Hospitals saw an increase in the number of patients complaining about dizziness, allergies and breathing difficulties. Elevated ozone levels exacerbated the symptoms. This time it affected more than just the elderly. The PJM Interconnection recorded a world record for electricity usage on the 26th: 135,000 megawatts. The PJM coordinates the movement of electricity in New Jersey and twelve other states from North Carolina to Illinois. On the 27th, PJM lowered voltage to certain customers by five percent due to the stress on the high voltage lines. Locally Public Service Electric and Gas (PSE&G) (10,780 megawatts), Atlantic City Electric (2,740 megawatts), Jersey Central Power and Light (JCP&L) and the Vineland Municipal Electric Utility (Cumberland County) all set new usage records. The extra demand for electricity did cause a strain on the system and about 3,000 JCP&L customers to lose power over the 26th and 27th in Monmouth County.Hospitals saw even bakers and construction workers suffering from heat related symptoms. The New Jersey Farm Bureau encouraged farm owners and field workers to change their schedules and avoid being outdoors or doing strenuous work during the hottest part of the day, wear hats and stay hydrated. The Hunterdon County Office of the Aging made sure all their clients had air conditioning. In Mercer County, the elderly were encouraged to go to air-conditioned libraries. In Burlington County, the elderly were encouraged to go to the air-conditioned malls.  A cold front abruptly ended the hot weather as it moved through the state late in the afternoon and early in the evening on the 27th.  The highest temperatures included 101 degrees at the Newark International Airport (Essex County), 99 degrees at the Atlantic City International Airport, Hamilton (Mercer County) and Chatham (Morris County), 98 degrees at the Philadelphia International Airport, Sandy Hook (Monmouth County), Millville (Cumberland County), Somerville (Somerset County) and Somerdale (Camden County), 97 degrees in Atsion (Burlington County), Trenton (Mercer County) and New Brunswick (Middlesex County), 96 degrees in Flemington (Hunterdon County) and Boonton (Morris County) and 95 degrees in Cape May (Cape May County) and Wertsville (Hunterdon County).

Heat in MIDDLESEX, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in MORRIS, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in NORTHWESTERN BURLINGTON, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in SALEM, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in SOMERSET, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in SOUTHEASTERN BURLINGTON, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in WESTERN ATLANTIC, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in WESTERN CAPE MAY, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in WESTERN MONMOUTH, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in WESTERN OCEAN, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in CAMDEN, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in CUMBERLAND, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in GLOUCESTER, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in HUNTERDON, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in MERCER, NEW JERSEY
From 25-JUL-05 09:00:00 to 27-JUL-05 18:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC